Respuesta :

Answer: Random fluctuations.

Explanation: Time series is a series that has all the points of time in a equal time order.So, there is usually organised and having equal gaps sequence. It can be imposed on many data  like real value data, discrete data,continuous data . But there is no space for the space of randomness so, random fluctuations are not predictable in it.Therefore the option (D) is the correct option.

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